Relay.



L P. HYNES.

RELAY.

APPlLlCATlON FILED NOV. I, l9l3.

Patented Oct. 22, 1918.

sTATEs PATENTA oEEICE.

LEE P. IIYNEs, or' CHICAGO, ILLINOIS, AssIGNoETo RAILWAY UTILITY COMPANY, or

-' CHICAGO, ILLINoIs, A CoRPoEA'TIoN or ILLINoIs. 1

RELAY.

' Specification of Letters Patent.

Patented oet. 22, 191s.

.Application med November 1` 1913. Serial No. 798.652.

To allwh-om t may concern:

Be it known that I, LEE P. HYNES, a citizen 'of the United States, residing a't Chicago, in -the county of Cook and State of Illinois, have invented certain newand useful Improvements in Relays, of which the 'following is a specication.

My invention relates more particularly to .relays designed to carry comparatively smalll currents and its object is to provide a device for this urpose which will be-inexpensive to manufiicture, durable and eicient and the more perishable parts of which may be readily replaced when worn out.

In the accompanying drawing, I have illustrated and in the following specification described in detail a preferred form of my invention but it is to be understood that the detailed disclosurev is foi` the purpose of exemplification only and that the scope ofv the invention is defined in the following claims in which I have endeavored to distinguishl it from the, rior art so far as known tol me without,

owever, relinquishin or abandoning any portion thereof.

n the drawing referredto above, Figure -1 is a central section through a preferred form ofmy invention lon the -line 1-1 of Fig. 2'; Fig. 2 a section on the line 2--2 of Fig. 1 at right angles 'to the plane thereof and Fig. ,3 a section upon the line v3 3 of Fig. 1 at` right angles to the plane thereof.

They same reference character is applied -to each part rwherever it occurs in the several views. A

The particular form of the invention illustrated is' designed more particularly for ready application to and removal from a switchboard, the frame or casing 4 of vulcanite or other suitable insulating material Vbeing provided upon opposite vsides with pairs'of connecting posts 6, 7 8 and 9 which are adapted to be received by suitable resili-A e ent contact clips upon the switchboard uponl which the relay is" to be used, and those numbered 7 and 8 respectively are connected up"to the contacts ofthe'device while those numbered 6 and 9 are connected to the terminals of the coil 10 of the relay magnet as seen more particularly in Figs. 2 and 3. lIt will be noted that-the terminals of each palr are arranged diagonally opposite each other as a result of which arrangement it 1s 1mma. terial how therelays apply to the cl1ps pre pared for it upon the swltchboard the proper pairof terminals necessarily being applied tapped'at 14 to receive the soft iron core 15 of the magnet. The coil 10 as shown 1s wound upon a spool or sleeve 16 and provided with insulatin end pieces 17, 18,

the whole being adapte to be slipped over the ,core 15 of the magnet and within the loop of the body of soft iron above described.I The armature 19 of the magnet is'mounted upon the inwardly turned endsV of the iron body by means of screw studs 20, 21 but is free to move longitudinally of the screws to and from thecore of the magnet by reason of the fact that the heads of the screws are spaced away from the field to .which they are attached as clearly shown in Fig. l1 of the drawing. Access to said screws may be had through openings 37, 38 in the insulating casing. as shown in Figs. land 3.

Upon the upper end of the insulating casing is mounted a pair of brackets 21', 22, which'as shown are struck up out of sheet metal and each secured at its ends by screws 23, 23, to the upper endl of the casing, the intermediate portion of Ieach bracket being offset or raised from the end of the casing to form a bridge.v Bracket 21 supports the stationary contact 24' which as shownis of a` frusto-conical piece of (graphite held in place in a similarly-shape opening in the bracket by a plate 25 secured by screws 26. The other bracket 22 supports the movable contact being provided for this purpose with. depending screws 27, 28, upon which the flexible. plate 29 forming the carrier for the movable contact, is loosely mounted. Screw 28 is somewhat longer than .screw 27 permittinga greater movement to the contact carrier at this point and consequently an angular as well as a reciprocating movement to afford a greater separation of the contacts, and between the two screws a spring 30 is mounted in a cap'screw 31 capped into the bracket 22. At its free. end the contact carrier 29 is perforated to receive the frustoconical Contact 32 of copper or. other suitable material and bentover beneath said contact to hold the latter in' place. The core 15 of the ma et is axially bored to receive a rod 33 o porcelain or other suitable insulating material which bears at one end against the armature 19 and at the other against the contact carrier rier is taken up by the spring. The switch elements upon the upper end of the casing are protected by a boxing of sheet metal, one element 34 of which comprising a top, end and two side walls, is secured to the insulating casing by inwardly turned flanges 36, 3 6, upon the side walls sliding into corresponding groovesin the edges of the top member of the insulating casing (see 3). AThe second member of the boxing which constitutes the other end wallthereof is a plate 35 formed upon its ends with beads 36, 36, which engage outwardly turned flanges upon the Amain boxin member as clearly shown in Fig. 2. If esired mica or other suitable insulating material may be -secured to theinner walls of the boxing as a'lining therefor. The inclosure of the magnet and its armature is completed by the application of a pair of metal plates 37', 37', t0 the open sides of the frame Where they are. secured by screws or other suitable means. The inclosure is -made absolutely dust proof by sealing the openings 37,38 with wax,

The iron body surroundingthe magnet coil forms with the core thereof and the armature a magnetic circuit which is open only when the armature is away from the core and the gap in which even then is very narrow, thus forming a device which will operate satisfactorily with very feeble. currents. The relay may be used in any position desired and as is now apparent possesses all the advantages set out in the opening paragraphs of this specification.

I claim:

' 1. A relay of the character described comprising an electro-magnet having a longitudinal passage therethrough, a leaf armature at one end of the magnet,.a rod extending entirely through the passage and loosely engaged by the armature, a movable and a stationary contact at the other end of the magnet and movable means carrying` the movable contact and engaged by the `rod to operate the same.

2. A relay of the character described comprising an electro-magnet having a longitudinal passage therethrough, a leaf armature at one end of the magnet, a rod extending entirely through the passage and loosely engaged by the armature, a movable and a stationary contact at theother end of the stationary magnet and resilient movable means carrying the movable contact and engaged by the rod to operate the same.

3. In a device of the classl described, a coil,

a U-shaped field (partially surrounding the coil, a core exten ing through the coil and connected at one end to the field, a pair of vparallel studs mounted respectively upon the ends of the field on opposite sides of the axis of the coil respectively, an armature loosely mounted on the studs, an insulating casing surrounding the field and studs mounted on the casing and electrically connected to the coil.

4. In a device of the class described, a magnet having a hollow core, an armature arranged to be drawn toward one end of said core, a rod extendin through the core, a stationary contact adjacent the other end of the magnet, a movable member carrying a contact at one end, a stud engaged by the movable member at the other end and a spring normally forcing said member into contact with the rod. l

5. In a device of the class described, a contact, a movable contact, a member 29 carryin said movable contact and loosely mounte and reciprocable upon studs 27, 28, and a spring 30 intermediate said studs and arranged to normally force the contacts apart.

6. A relay ofthe class described comprising an electromagnetic device and a switch operated thereby, two pairs of terminals for the device and switch respectively adapted to engage clips upon a switchboard, the terminals of each pair being diagonally arranged upon the relay whereby the relay may be engaged with thel clips4 upon the switchboard in either of two reverse ositions without affecting the currents tlerethrou h.

7. n a device of the class described, a coil, a longitudinally'bored core therefor, a. leaf armature,studs upon opposite sides of the core upon which the leaf armature is 4loosely mounted and reciprocable, a rod c resting loosely upon said armature and passing through the core, a switch on the opposite end of the magnet from the armature thereof comprising a relatively stationary.

and a movable contact, av spring pressed member carrying the movable contact/and 4arranged to be engaged and operated by the. ,rod 1n opposition to said'spring.

ture loosely-mounted upon said studsa rod resting upon said-armature and extending through the core, a stationary contact, upon soy the end of the device opposite-the armature, for said switch, also arranged upon opposite a spring-pressed member and a' movable sides lof said boxing and diagonal of the contact adapted to engage the stationary same, whereby the relay may be engaged contact and carried b said member said with correspondingly arranged clips in. 5 member 'being adapte to be engaged and either of two reversed positions'without af 15 operated by said rod an insulated boxing fecting the currents throughout the same.

surroundin said iel a pair of terminals LEE P. HYNES.

for said co1 arranged respectively upon op- Witnesses:

posite sides of said boxing and in diagon-` JOHN B. MACAUmY, 10 ally opposite positions, a pair of terminals ROBERT DOBBERMAN. f 

